Luminous pendant



Aug. 21, 1923. 1,465,759

W. H. DEY

LUMINOUS PENDANT Filed June 28 1922 INVENTOR A TTORNEYS'.

Patented Aug. 21, 1923.

un rao STATES 1,465,759 PATENT a m WILLIAM H. DEY, OF NEWARK, NEW JERSEY, ASSIGNOR TO UNITED STATES RADIUM CORPORATION, A CORPORATION OF DELAWARE.

LUMINOUS PENDANT;

the invention, such as will enable others skilled in the art to which it appertains-to .make and use the same. o

This invention relates to luminous pendants and more particularly to radium luminous pendants adapted to be affixed to the ends of the provision of a pendant of an improved construction, the improvements relating particularly to the construction. of the parts whereby the pendant is affixed to the end of the chain.

Pendants of the type referred to have heretofore been made consisting of a glass receptacle within which the radium luminous composition is enclosed and a metallic piece aflixed to the glass receptacle and formed to facilitate attaching it to the end of a chain of the type known as a dumbbell chain. Using this construction, much difficulty has been experienced with accidental detachment of the pendant. from the chain. Furthermore, this prior construction permits detachment of the pendant Y from the chain quite readily and without the use of any special tool, and because of this there have been frequent instances of unauthorized detachment and removal of pendants. For instance, it has been the experienceof hotels and other public laces that pendants on the pull-chums of amps in rooms and elsewhere have been detached and taken away. I

w The present invention isdirected to the provision of a pendant of an'improved construction such that the pendant may be readily attached to the end of a pull-chain and held securely thereto in such a way as to effectually prevent accidental detachment of the pendant, and to make intentional detachment sufficiently difficult to practically eliminate theft of the pendants.

- In accordance with the invention. the glass receptacle for the luminous composition is provided with a metallic holder having a central opening for the small section ull-chains of electric incandescent lamp soc ets. The invention is directed to cap in position upon the holder; Fig. 3 is a of the chain connecting two balls, and a lateral opening v communicating with the central opening and through which one ofthe balls-may be passed, and cooperating with this metallic holder is a metallic looking cap having a central opening for the chain, this cap being adapted to fit over the holder and to be permanently affixed thereto.

The holder may be afiixcd to the glass receptacle in any suitable manner, as for instance by means of a circumferential flange on the holder which fits closely over a bead formed on the receptacle. If that construction be employed, the cap may be of a configuration closely approxnnating that of the holder and may have a.circumferential bead at its edge which may be sprung over or threaded upon the flange of the holder so as to secure the. cap and holder togetheragainst relative movement in the direction of the length of the chain such as would uncover the lateral opening in the holder and thus permit detachment of the chain therefrom.

The preferred embodiment of the inven; tion will be better understood by reference to the accompanying drawing in which Fig. 1 is an elevation partly in section of the pendant and chain with the holder and cap displaced; Fig. 2 is a similar view with the View in elevation corresponding to Fig. 2; Figs. 4 and 5 are longitudinal sections of the cap the views showing the lower edge expanded and contracted respectively, and

Figs. 6 and 7 are top views of the holder and cap. 1

Referring to these drawings, 8 indicates the glass receptacle within which the luminous composition is contained. This receptacle is preferably in the form of a hollow cylinder having its lower end closed as shown and its upper end open for the insertion of the composition. At its upper end the receptacle 8 is provided with a circumferential bead. Theholder is a cupshaped sheet-metal piece 9 shown in Figs. 1 and 6. At the center of its top portion is an opening 10 of a size corresponding to the short lengths of the chain connecting adjacent balls of the chain. In the side wall of the holder is an opening 11 of a size suiiicient to permit the entrance of one of the ballsv therethrough and the openings 10 and 11 are connected by a slot shown at 12 secured to the upper end of the receptacle up from that ball is passe 8 by having the metal at the lower end of] the holder shaped over the circumferential head of the receptacle 8 as is shown at 13. To facilitate this operation of shaping the metal around the head, the metal at the lower edge of the holder may be split at dis? tributed points as indicated at 14. in Fig. 4.

The cap 15 is quite similar to the holder 9 except that it has no lateral opening, and

the central opening 16 at its closed upper end is of a size sufiicient to permit free passage of the chain through it. At its lower end the cap is shaped to facilitate shaping the metal of the cap over the portion of the holder which rips the bead on the glass receptacle. To facilitate this, the metal of the cap may also be split as is indicated at 17 in Fig. 5. c

In assembling the parts, the holder shown in Figs. 1 and 6 is secured to the receptacle 8 as above indicated and as is shown in Fig. 1. Then the end of the chain 18 is passed through the central opening 16 in the cap 15. Then the end ball of the chain is passed through the lateral opening 11 of the holder 13 and the small connectin piece pro'ecting (I through t e slot 12 and into the small opening 10 of "the holder, the parts being then in the position shown in Fig. 1. The cap 15 is next moved lengthwise of the chain. 18 until it is passed down over the holder 9. Then pressure is exerted to force the cap down over the holder until the metal--at-the lower end of the cap springs over the circumferential bead of the portion of the holder 9 which encloses the head of the receptacle 8. The cap and holder are preferably of the same shape so that-when they are brought into this relation the cap is in contact with the holder over its entlre interior surface, the arts being then in the relation shown in igs. 2 and 3. When so assembled the cap grips the holder so firmly that disengagement of them cannot occur accidentally and cannot be effected readily as it'is so diflicult to appflfy to the parts the pressure necessary to e cct their disengagement. In fact, the cap so completely conceals the holder that it is not apparent what the construction employed is and what steps should be taken to remove the pendant from the chain. The cap overlies the lateral opening 11 and slot 12 and so prevents lateral movement of the end portion of the chain through the slot, and'the holder prevents movement of the end ball of the chain through the large open-- ing in the cap. o

This construction for attaching means for luminous pendants is one that may be circumferential bead of the holder.

manufactured at low cost and perm-its of 1. A luminous pendant com rising the combination of a receptacle for t e luminous material provided with a. circumferential bead atits' upperv end, a holder having its lower edge shaped over the head on the receptacle, a central opening at its upper end, and an opening in its side wall communicating with said central opening, and a cap formed with a central opening in its upper end and an imperforate side wall and having its lower edge adapted to be shaped over the lower edge of-the holder and the receptacle bead.

2. A luminous pendant comprising the combination of a receptacle for the luminous material, a holder to which the receptacle.

is secured having a central opening at its upper end and anopening in its side wall communicating with the central opening, a chain connected with the holder, and a cap having an opening through its upper end and an imperforateside wall, the cap fitting over and bein secured to the holder with the chain passing through the central open .material, a holder to which thereceptacle is directly secured, this holder having .a circumferential bead at its lower end, a central opening at its upper end and an opening in its side wall communicating with said central opening, and a cap which has a central opening at its upper, end and an. imperforate side wall, and which is adapted to be secured to the holder to prevent movement relative to the holder in the direction of the len h of the pendant by having the metal at t e lower end of the cap shaped over the In testimony'whereof I aflix mglsi ature.

WILLIAM EY. 

